Patents by Inventor Asuncion Esteve Bianchini

Asuncion Esteve Bianchini has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing cephalosporins and intermediates therefor
    Patent number: 5037988
    Abstract: The invention relates to activated aminothiazolyl-oximinoacetic acid derivatives, their production and their use in the production of e.g. amides, in particular cephalosporin antibiotics.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: August 6, 1991
    Assignee: Gema S.A.
    Inventors: Jose Diago Meseguer, Asuncion Esteve Bianchini, Carlos E. Lenhardt Padro, Esteve Sans Pitarch
  • Piperazine intermediates
    Patent number: 5015736
    Abstract: A new compound called N,N'-carbonyl-bis-(4-ethyl-2,3-dioxo)-piperazine of Formula I ##STR1## A process for the preparation thereof based on the reaction of 4-ethyl-2,3-dioxo-piperazine or a trimethylsilyl derivative thereof with carbonyl chloride or a derivative thereof.The use of the compound of Formula I as an intermediate in the preparation of compounds of Formula II ##STR2## where R is a radical, substituted in alpha position, of a molecule of an acid selected from the group formed by phenylacetic acid, p-hydroxy phenylacetic acid, a 6-(phenylacetamido)-penicillanic acid and a 7-(phenylacetamido)-cephalosporanic acid.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: May 14, 1991
    Assignee: Gema, S.A.
    Inventors: Juan Cabre Castellvi, Jose Diago Meseguer, Asuncion Esteve Bianchini, Carlos E. Lenhardt Padro, Esteve Sans Pitarch
  • N,N'-carbonyl-bis-(4-ethyl-2,3-dioxo)-piperazine
    Patent number: 4965358
    Abstract: A new compound called N,N'-carbonyl-bis-(4-ethyl-2,3-dioxo)-piperazine of Formula I ##STR1## A process for the preparation thereof based on the reaction of 4-ethyl-2,3-dioxo-piperazine or a trimethylsilyl derivative thereof with carbonyl chloride or a derivative thereof.The use of the compound of Formula I as an intermediate in the preparation of compounds of Formula II ##STR2## where R is a radical, substituted in alpha position, of a molecule of an acid selected from the group formed by phenylacetic acid, p-hydroxy phenylacetic acid, a 6-(phenylacetamido)-penicillanic acid and a 7-(phenylacetamido)-cephalosporanic acid.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: October 23, 1990
    Assignee: Gema, S. A.
    Inventors: Juan Cabre Castellvi, Jose Diago Meseguer, Asuncion Esteve Bianchini, Carlos E. Lenhardt Padro, Esteve Sans Pitarch
  • Process for the preparation of hydroxy-alpha-amino-benzyl penicillin
    Patent number: 4193918
    Abstract: A novel process for the preparation of hydroxy-alpha-amino-benzyl penicillin, particularly the p-hydroxy derivative known as amoxicillin.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: March 18, 1980
    Assignee: Antibioticos
    Inventors: Asuncion Esteve Bianchini, Antonio L. Palomo Coll